Update Linux to v5.4.148
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.148.tar.gz
Change-Id: Ib3d26c5ba9b022e2e03533005c4fed4d7c30b61b
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/arch/csky/kernel/atomic.S b/arch/csky/kernel/atomic.S
index 5b84f11..3821ef9 100644
--- a/arch/csky/kernel/atomic.S
+++ b/arch/csky/kernel/atomic.S
@@ -17,10 +17,12 @@
mfcr a3, epc
addi a3, TRAP0_SIZE
- subi sp, 8
+ subi sp, 16
stw a3, (sp, 0)
mfcr a3, epsr
stw a3, (sp, 4)
+ mfcr a3, usp
+ stw a3, (sp, 8)
psrset ee
#ifdef CONFIG_CPU_HAS_LDSTEX
@@ -47,7 +49,9 @@
mtcr a3, epc
ldw a3, (sp, 4)
mtcr a3, epsr
- addi sp, 8
+ ldw a3, (sp, 8)
+ mtcr a3, usp
+ addi sp, 16
KSPTOUSP
rte
END(csky_cmpxchg)
diff --git a/arch/csky/kernel/entry.S b/arch/csky/kernel/entry.S
index a7a5b67..4349528 100644
--- a/arch/csky/kernel/entry.S
+++ b/arch/csky/kernel/entry.S
@@ -170,8 +170,10 @@
ldw a3, (sp, LSAVE_A3)
#if defined(__CSKYABIV2__)
subi sp, 8
- stw r5, (sp, 0x4)
- stw r4, (sp, 0x0)
+ ldw r9, (sp, LSAVE_A4)
+ stw r9, (sp, 0x0)
+ ldw r9, (sp, LSAVE_A5)
+ stw r9, (sp, 0x4)
#else
ldw r6, (sp, LSAVE_A4)
ldw r7, (sp, LSAVE_A5)
@@ -318,8 +320,6 @@
mfcr a2, psr /* Save PSR value */
stw a2, (a3, THREAD_SR) /* Save PSR in task struct */
- bclri a2, 6 /* Disable interrupts */
- mtcr a2, psr
SAVE_SWITCH_STACK
diff --git a/arch/csky/kernel/head.S b/arch/csky/kernel/head.S
index 61989f9..17ed9d2 100644
--- a/arch/csky/kernel/head.S
+++ b/arch/csky/kernel/head.S
@@ -21,6 +21,11 @@
ENTRY(_start_smp_secondary)
SETUP_MMU
+ /* copy msa1 from CPU0 */
+ lrw r6, secondary_msa1
+ ld.w r6, (r6, 0)
+ mtcr r6, cr<31, 15>
+
/* set stack point */
lrw r6, secondary_stack
ld.w r6, (r6, 0)
diff --git a/arch/csky/kernel/perf_callchain.c b/arch/csky/kernel/perf_callchain.c
index e68ff37..ab55e98 100644
--- a/arch/csky/kernel/perf_callchain.c
+++ b/arch/csky/kernel/perf_callchain.c
@@ -12,12 +12,17 @@
static int unwind_frame_kernel(struct stackframe *frame)
{
- if (kstack_end((void *)frame->fp))
+ unsigned long low = (unsigned long)task_stack_page(current);
+ unsigned long high = low + THREAD_SIZE;
+
+ if (unlikely(frame->fp < low || frame->fp > high))
return -EPERM;
- if (frame->fp & 0x3 || frame->fp < TASK_SIZE)
+
+ if (kstack_end((void *)frame->fp) || frame->fp & 0x3)
return -EPERM;
*frame = *(struct stackframe *)frame->fp;
+
if (__kernel_text_address(frame->lr)) {
int graph = 0;
diff --git a/arch/csky/kernel/process.c b/arch/csky/kernel/process.c
index f320d92..397962e 100644
--- a/arch/csky/kernel/process.c
+++ b/arch/csky/kernel/process.c
@@ -34,10 +34,11 @@
return sw->r15;
}
-int copy_thread(unsigned long clone_flags,
+int copy_thread_tls(unsigned long clone_flags,
unsigned long usp,
unsigned long kthread_arg,
- struct task_struct *p)
+ struct task_struct *p,
+ unsigned long tls)
{
struct switch_stack *childstack;
struct pt_regs *childregs = task_pt_regs(p);
@@ -64,7 +65,7 @@
childregs->usp = usp;
if (clone_flags & CLONE_SETTLS)
task_thread_info(p)->tp_value = childregs->tls
- = childregs->regs[0];
+ = tls;
childregs->a0 = 0;
childstack->r15 = (unsigned long) ret_from_fork;
diff --git a/arch/csky/kernel/setup.c b/arch/csky/kernel/setup.c
index 23ee604..2c1e253 100644
--- a/arch/csky/kernel/setup.c
+++ b/arch/csky/kernel/setup.c
@@ -24,26 +24,9 @@
};
#endif
-phys_addr_t __init_memblock memblock_end_of_REG0(void)
-{
- return (memblock.memory.regions[0].base +
- memblock.memory.regions[0].size);
-}
-
-phys_addr_t __init_memblock memblock_start_of_REG1(void)
-{
- return memblock.memory.regions[1].base;
-}
-
-size_t __init_memblock memblock_size_of_REG1(void)
-{
- return memblock.memory.regions[1].size;
-}
-
static void __init csky_memblock_init(void)
{
unsigned long zone_size[MAX_NR_ZONES];
- unsigned long zhole_size[MAX_NR_ZONES];
signed long size;
memblock_reserve(__pa(_stext), _end - _stext);
@@ -57,54 +40,36 @@
memblock_dump_all();
memset(zone_size, 0, sizeof(zone_size));
- memset(zhole_size, 0, sizeof(zhole_size));
min_low_pfn = PFN_UP(memblock_start_of_DRAM());
- max_pfn = PFN_DOWN(memblock_end_of_DRAM());
-
- max_low_pfn = PFN_UP(memblock_end_of_REG0());
- if (max_low_pfn == 0)
- max_low_pfn = max_pfn;
+ max_low_pfn = max_pfn = PFN_DOWN(memblock_end_of_DRAM());
size = max_pfn - min_low_pfn;
- if (memblock.memory.cnt > 1) {
- zone_size[ZONE_NORMAL] =
- PFN_DOWN(memblock_start_of_REG1()) - min_low_pfn;
- zhole_size[ZONE_NORMAL] =
- PFN_DOWN(memblock_start_of_REG1()) - max_low_pfn;
+ if (size <= PFN_DOWN(SSEG_SIZE - PHYS_OFFSET_OFFSET))
+ zone_size[ZONE_NORMAL] = size;
+ else if (size < PFN_DOWN(LOWMEM_LIMIT - PHYS_OFFSET_OFFSET)) {
+ zone_size[ZONE_NORMAL] =
+ PFN_DOWN(SSEG_SIZE - PHYS_OFFSET_OFFSET);
+ max_low_pfn = min_low_pfn + zone_size[ZONE_NORMAL];
} else {
- if (size <= PFN_DOWN(LOWMEM_LIMIT - PHYS_OFFSET_OFFSET))
- zone_size[ZONE_NORMAL] = max_pfn - min_low_pfn;
- else {
- zone_size[ZONE_NORMAL] =
+ zone_size[ZONE_NORMAL] =
PFN_DOWN(LOWMEM_LIMIT - PHYS_OFFSET_OFFSET);
- max_low_pfn = min_low_pfn + zone_size[ZONE_NORMAL];
- }
+ max_low_pfn = min_low_pfn + zone_size[ZONE_NORMAL];
+ write_mmu_msa1(read_mmu_msa0() + SSEG_SIZE);
}
#ifdef CONFIG_HIGHMEM
- size = 0;
- if (memblock.memory.cnt > 1) {
- size = PFN_DOWN(memblock_size_of_REG1());
- highstart_pfn = PFN_DOWN(memblock_start_of_REG1());
- } else {
- size = max_pfn - min_low_pfn -
- PFN_DOWN(LOWMEM_LIMIT - PHYS_OFFSET_OFFSET);
- highstart_pfn = min_low_pfn +
- PFN_DOWN(LOWMEM_LIMIT - PHYS_OFFSET_OFFSET);
- }
+ zone_size[ZONE_HIGHMEM] = max_pfn - max_low_pfn;
- if (size > 0)
- zone_size[ZONE_HIGHMEM] = size;
-
- highend_pfn = max_pfn;
+ highstart_pfn = max_low_pfn;
+ highend_pfn = max_pfn;
#endif
memblock_set_current_limit(PFN_PHYS(max_low_pfn));
dma_contiguous_reserve(0);
- free_area_init_node(0, zone_size, min_low_pfn, zhole_size);
+ free_area_init_node(0, zone_size, min_low_pfn, NULL);
}
void __init setup_arch(char **cmdline_p)
diff --git a/arch/csky/kernel/smp.c b/arch/csky/kernel/smp.c
index b753d38..b5c5bc3 100644
--- a/arch/csky/kernel/smp.c
+++ b/arch/csky/kernel/smp.c
@@ -22,6 +22,9 @@
#include <asm/sections.h>
#include <asm/mmu_context.h>
#include <asm/pgalloc.h>
+#ifdef CONFIG_CPU_HAS_FPU
+#include <abi/fpu.h>
+#endif
struct ipi_data_struct {
unsigned long bits ____cacheline_aligned;
@@ -120,7 +123,7 @@
int rc;
if (ipi_irq == 0)
- panic("%s IRQ mapping failed\n", __func__);
+ return;
rc = request_percpu_irq(ipi_irq, handle_ipi, "IPI Interrupt",
&ipi_dummy_dev);
@@ -156,6 +159,8 @@
volatile unsigned int secondary_ccr;
volatile unsigned int secondary_stack;
+unsigned long secondary_msa1;
+
int __cpu_up(unsigned int cpu, struct task_struct *tidle)
{
unsigned long mask = 1 << cpu;
@@ -164,6 +169,7 @@
(unsigned int) task_stack_page(tidle) + THREAD_SIZE - 8;
secondary_hint = mfcr("cr31");
secondary_ccr = mfcr("cr18");
+ secondary_msa1 = read_mmu_msa1();
/*
* Because other CPUs are in reset status, we must flush data
diff --git a/arch/csky/kernel/traps.c b/arch/csky/kernel/traps.c
index b057480..63715cb 100644
--- a/arch/csky/kernel/traps.c
+++ b/arch/csky/kernel/traps.c
@@ -115,8 +115,9 @@
int sig;
unsigned long vector;
siginfo_t info;
+ struct task_struct *tsk = current;
- vector = (mfcr("psr") >> 16) & 0xff;
+ vector = (regs->sr >> 16) & 0xff;
switch (vector) {
case VEC_ZERODIV:
@@ -129,6 +130,7 @@
sig = SIGTRAP;
break;
case VEC_ILLEGAL:
+ tsk->thread.trap_no = vector;
die_if_kernel("Kernel mode ILLEGAL", regs, vector);
#ifndef CONFIG_CPU_NO_USER_BKPT
if (*(uint16_t *)instruction_pointer(regs) != USR_BKPT)
@@ -146,16 +148,20 @@
sig = SIGTRAP;
break;
case VEC_ACCESS:
+ tsk->thread.trap_no = vector;
return buserr(regs);
#ifdef CONFIG_CPU_NEED_SOFTALIGN
case VEC_ALIGN:
+ tsk->thread.trap_no = vector;
return csky_alignment(regs);
#endif
#ifdef CONFIG_CPU_HAS_FPU
case VEC_FPE:
+ tsk->thread.trap_no = vector;
die_if_kernel("Kernel mode FPE", regs, vector);
return fpu_fpe(regs);
case VEC_PRIV:
+ tsk->thread.trap_no = vector;
die_if_kernel("Kernel mode PRIV", regs, vector);
if (fpu_libc_helper(regs))
return;
@@ -164,5 +170,8 @@
sig = SIGSEGV;
break;
}
+
+ tsk->thread.trap_no = vector;
+
send_sig(sig, current, 0);
}